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Paravalvular leakage (PVL) after mitral valve replacement is a troublesome complication that may lead to severe symptoms and reoperation. Previous case reports on total thoracoscopic cardiac surgery without aortic cross-clamping for repairing late PVL are rare. We describe a 64-year-old man who had undergone aortic and mitral valve replacement via median sternotomy eight years earlier, and who recently developed cardiac failure due to severe tricuspid regurgitation (TR) and PVL in the posterior mitral annulus. During total thoracoscopic surgery with using the beating heart technique, direct closure of the PVL was achieved via pledgeted mattress sutures, and tricuspid valvuloplasty was routinely performed to treat TR. This case indicated that total thoracoscopic surgery on a beating heart may be an excellent option for treating PVL concomitant with TR.

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BACKGROUND: Evidence comparing conventional minimally invasive esophagectomy (CMIE) via laparoscopy and thoracoscopy with robot-assisted minimally invasive esophagectomy (RAMIE) is scarce. The aim of this meta-analysis was to compare surgical outcomes after CMIE and RAMIE with an intrathoracic anastomosis. METHODS: A systematic literature search was performed to identify original articles analyzing outcomes after CMIE and RAMIE. Main surgical outcomes included operative time, intraoperative blood loss, anastomotic leak rates, pneumonia, overall morbidity, length of stay (LOS), and 30-day mortality. Oncologic outcomes included lymph node yield and R0 resections rates. A meta-analysis of proportions and linear regression models were used to assess the effect of each procedure on the different outcomes. RESULTS: A total of 6,249 patients were included for analysis; 5,275 (84%) underwent CMIE and 974 (16%) RAMIE. Robotic esophagectomy had longer operative time and less intraoperative blood loss. Anastomotic leakage rates were similar with both approaches. Patients undergoing RAMIE had significantly lower rates of postoperative pneumonia (OR 0.46, 95% CI 0.35-0.61, P < .0001) and overall morbidity (OR 0.67, 95% CI 0.58-0.79, P < .0001). Median LOS was similar in both procedures (RAMIE: 12.1 versus CMIE: 11.9 days, P = .64). Similar mortality rates were found after RAMIE and CMIE (OR 0.69, 95% CI 0.34-1.38, P = .29). Lymph node yield was similar in both procedures, but RAMIE was associated with higher rates of R0 resection (OR 2.84, 95% CI 1.53-5.26, P < .001). CONCLUSION: Patients undergoing robotic esophagectomy have less intraoperative blood loss, lower rates of postoperative pneumonia, reduced overall morbidity, and higher rates of R0 resections, as compared with those undergoing a laparoscopic-thoracoscopic esophageal resection.

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BACKGROUND: Juvenile myasthenia gravis (JMG) is an antibody mediated autoimmune disorder that manifests as progressive voluntary muscle weakness and fatigue. In medically refractory cases, thymectomy has been shown to abrogate symptoms and reduce glucocorticoid dependence. While transcervical or transsternal incisions have been the traditional approach, adult trends now favor thoracoscopic thymectomy. Little data exist to support this approach in children. METHODS: A retrospective review of all patients younger than 20 years of age who underwent a thymectomy for JMG at two pediatric institutions between 2001 and 2018 was performed. Children were divided into either an open (transcervical or transsternal) or thoracoscopic group and baseline characteristics, perioperative, and postoperative outcomes were compared. RESULTS: Thirty-four thymectomies were performed during the 18-year study period; 18 via an open and 16 via a thoracoscopic approach. The operative time was shorter for open procedures compared thoracoscopic ones (108 ±â€¯49 and 145 ±â€¯43 min, respectively, p = 0.025). Thoracoscopic thymectomy was associated with less intraoperative blood loss (5.5 ±â€¯6.0 vs 55 ±â€¯67 ml, p = 0.007), decreased duration of postoperative intravenous narcotic use (5.0 ±â€¯1.5 vs 20 ±â€¯23 h, p = 0.018), and a shorter length of hospitalization (1.7 ±â€¯1.0 vs 2.7 ±â€¯1.1 days, p = 0.009). No perioperative complication occurred in either group. Clinical improvement was reported in 94% of children in both groups. CONCLUSIONS: Thoracoscopic thymectomy in children is a safe and effective surgical technique for the treatment of JMG. Increased acceptance of this minimally invasive approach by children, families, and referring neurologists may enable earlier surgical intervention. TYPE OF STUDY: Clinical research paper. LEVEL OF EVIDENCE: III.

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BACKGROUND: Primary effusion lymphoma is a rare, high-grade non-Hodgkin's lymphoma that usually occurs in immunosuppressed or human immunodeficiency virus-positive individuals in advanced stages of the disease. However, primary effusion lymphoma occasionally affects immunocompetent patients who are infected with human herpes virus type 8 or Epstein-Barr virus. This disease manifests with liquid collections in cavities, producing constitutional symptoms; fever; weight loss; and symptoms related to extrinsic compression, such as dyspnea or abdominal discomfort. Diagnosis is confirmed with cytological or tissue evaluation showing large, multinucleated lymphoid cells with positive specific markers for the disease, such as CD45 and markers related to viral infections, when present. There is no standard treatment for primary effusion lymphoma, but several chemotherapy protocols are recommended, usually with poor results. CASE PRESENTATION: We present a case of an adult human immunodeficiency virus-negative Hispanic origin woman with primary effusion lymphoma with pleuritic, pericardial, and peritoneal compromise who also had unusual complications during a diagnostic procedure: the accidental rupture of the left ventricle and the development of a secondary left ventricular pseudoaneurysm. We describe the clinical, radiological, and laboratory characteristics as well as the outcome of this case. CONCLUSIONS: Primary effusion lymphoma is a very rare entity that represents 4% of non-Hodgkin's lymphoma cases associated with human immunodeficiency virus and 0.1% to 1% of all lymphomas in patients with another type of immunodeficiency in regions where human herpes virus type 8 is not endemic. This reported case is an unusual presentation of primary effusion lymphoma because it occurred in an immunocompetent human immunodeficiency virus-negative adult woman without the presence of Kaposi's sarcoma or Castleman's disease and for whom the clinical course after chemotherapy was successful. However, the rupture of the free wall of the left ventricle is a very rare catastrophic event that usually occurs after myocardial infarction. Left ventricle free wall rupture rarely goes unnoticed, but when it occurs, it leads to the development of a ventricular pseudoaneurysm in which the rupture is contained by the pericardium with an organized thrombus and an adjacent hematoma.

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OBJECTIVE: Minimally invasive repair of pectus excavatum (MIRPE) is a surgical treatment for PE. During the procedure, a specialized introducer is used to tunnel across the mediastinum for thoracoscopic insertion of a metal bar. There have been reported cases of cardiac perforation during this risky step. The large introducer can be a dangerous lever in unskilled hands. We set out to determine the safety and feasibility of using regular instruments (i.e., not relying on special devices or tools) to create the retrosternal tunnel during MIRPE. METHODS: This was a preliminary study of MIRPE with regular instruments (MIRPERI), involving 28 patients with PE. We recorded basic patient demographics, chest measurements, and surgical details, as well as intraoperative and postoperative complications. RESULTS: Patients undergoing MIRPERI had Haller index values ranging from 2.58 to 5.56. No intraoperative complications occurred. Postoperative complications included nausea/vomiting in 8 patients, pruritus in 2, and dizziness in 2, as well as atelectasis, pneumothorax with thoracic drainage, pleural effusion, and dyspnea in 1 patient each. CONCLUSIONS: In this preliminary study, the rate of complications associated with MIRPERI was comparable to that reported in the literature for MIRPE. The MIRPERI approach has the potential to improve the safety of PE repair, particularly for surgeons that do not have access to certain special instruments or have not been trained in their use.

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PURPOSE: There remains a critical need for the provision for pediatric humanitarian aid worldwide. Historically, the emphasis of global pediatric health needs has been focused on infectious diseases. Today, we are witnessing a shift in this paradigm, with growing attention being paid toward the surgical needs of children. The use and deployment of minimally invasive surgery (MIS) in these austere environments with its concomitant reduction in length of hospitalization, pain, and morbidity is logical. The goal of this study was to report our deployment strategy and review our experience with pediatric MIS during humanitarian missions to determine if it is safe, feasible, and efficacious. METHODS: As part of the World Pediatric Project (WPP), data were collected retrospectively from the general pediatric surgery (GPS) team missions from January 2007 to January 2017. All cases were performed at a single medical center in the Eastern Caribbean Island Nation of St. Vincent and the Grenadines (SVG). Data included patient demographics, diagnosis, procedure, conversion to open procedure, complications, and postoperative course. The teams utilized a dedicated WPP operating theater, prepositioned and deployed GPS supplies, and MIS resources. All anesthesia, surgical, and nursing personal were board certified and trained professionals functioning as part of the WPP team. RESULTS: One hundred thirty-four children underwent general and thoracic pediatric surgical procedures during the study period. Mean age 9.2 years (2-19 years). Thirty-seven children underwent MIS procedures (27%). There were no conversions to open procedures. There were only two postoperative complications, cellulitis following laparoscopic appendicostomies, which required intravenous antibiotics and were discharged on a course of oral antibiotics. The postoperative course for all children was uneventful and no child required readmission. There were no technical failures in the MIS systems or instrumentation. CONCLUSIONS: Our retrospective review supports the use of MIS techniques as part of GPS humanitarian missions. We have found it to be a safe, feasible, and effective modality that may reduce length of stay, pain, and morbidity compared with open procedures in these remote environments. Although our MIS systems and instrumentations functioned effectively, concerns regarding the storage and sustainability for future missions are significant. Onsite health care partners, redundant systems, and remote technical support access could potentially alleviate these concerns.

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ABSTRACT Objective: Minimally invasive repair of pectus excavatum (MIRPE) is a surgical treatment for PE. During the procedure, a specialized introducer is used to tunnel across the mediastinum for thoracoscopic insertion of a metal bar. There have been reported cases of cardiac perforation during this risky step. The large introducer can be a dangerous lever in unskilled hands. We set out to determine the safety and feasibility of using regular instruments (i.e., not relying on special devices or tools) to create the retrosternal tunnel during MIRPE. Methods: This was a preliminary study of MIRPE with regular instruments (MIRPERI), involving 28 patients with PE. We recorded basic patient demographics, chest measurements, and surgical details, as well as intraoperative and postoperative complications. Results: Patients undergoing MIRPERI had Haller index values ranging from 2.58 to 5.56. No intraoperative complications occurred. Postoperative complications included nausea/vomiting in 8 patients, pruritus in 2, and dizziness in 2, as well as atelectasis, pneumothorax with thoracic drainage, pleural effusion, and dyspnea in 1 patient each. Conclusions: In this preliminary study, the rate of complications associated with MIRPERI was comparable to that reported in the literature for MIRPE. The MIRPERI approach has the potential to improve the safety of PE repair, particularly for surgeons that do not have access to certain special instruments or have not been trained in their use.

RESUMO Objetivo: O minimally invasive repair of pectus excavatum (MIRPE, reparo minimamente invasivo do pectus excavatum) é um tratamento cirúrgico do PE. Durante o procedimento, utiliza-se um introdutor específico a fim de criar um túnel mediastinal para a colocação toracoscópica de uma barra metálica. Já houve casos relatados de perfuração cardíaca durante essa etapa arriscada. O introdutor grande pode ser uma perigosa alavanca em mãos inábeis. Propusemo-nos a determinar a segurança e viabilidade do uso de instrumentos comuns (isto é, sem contar com dispositivos ou ferramentas especiais) para criar o túnel retroesternal durante o MIRPE. Métodos: Estudo preliminar sobre o MIRPE with regular instruments (MIRPERI, MIRPE com instrumentos comuns), envolvendo 28 pacientes com PE. Foram registrados dados demográficos básicos dos pacientes, medições torácicas e detalhes cirúrgicos, bem como complicações intra e pós-operatórias. Resultados: Os pacientes submetidos ao MIRPERI apresentavam índice de Haller entre 2,58 e 5,56. Não ocorreram complicações intraoperatórias. As complicações pós-operatórias incluíram náusea/vômito em 8 pacientes, prurido em 2 e tontura em 2, bem como atelectasia, pneumotórax com drenagem torácica, derrame pleural e dispneia em 1 paciente cada. Conclusões: Neste estudo preliminar, a taxa de complicações associadas ao MIRPERI foi comparável à relatada na literatura para o MIRPE. A abordagem de MIRPERI tem o potencial de melhorar a segurança do reparo do PE, particularmente para cirurgiões que não têm acesso a certos instrumentos especiais ou não foram treinados para utilizá-los.

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INTRODUCTION: The aim of this study was to investigate the effectiveness of thoracoscopy in the diagnosis of non-affiliated pleural effusions (PE). MATERIAL AND METHODS: A five-year prospective study including data from 110 patients that were clinically diagnosed as benign (14.5%), malign (34.5%) and non-affiliated (50.9%). PE in patents without oncology disease and negative biopsy or cytology were considered as benign. Malignant diagnosis was established according to a pleural biopsy, compatible cytology and/or clinical features. Remaining cases were considered as non-affiliated. Thoracoscopy was done under local anaesthesia and sedation. RESULTS: Thoracoscopy confirmed previous clinical diagnosis of benignity and malignity. Regarding non-affiliated patients, 30.35% were diagnosed after thoracoscopy as unspecific pleuritis, 17.86% mesothelioma and 1.79% pleural tuberculosis (TBC). The other 48.21% of patients reported as non-affiliated were diagnosed with pleural carcinoma. Statistical analysis did not reveal differences between frequencies analysed. CONCLUSIONS: Our results indicate that thoracoscopy is a cost-effective and reliable technique for obtaining histological diagnosis in PE and also allows a directed pleurodesis if indicated.

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The objective of the present study consists of revising our initial experience with the use of thoracoscopic surgery for lung resections and their complications. Clinical histories and videos, from patients treated surgically at the Fundación Hospitalaria-Private Children Hospital and CEMIC Universitary Hospital from april 2005 to october 2008, were retrospectivelly estudied. Eleven female and 9 male patients were included. The median surgical time was 150 min (range: 60-270 min). The median time of chest tube permanence was 3 days (range: 2-10 days). Median hospital stay was 15 days (range: 3-29 days). It was concluded that thoracoscopic lung lobectomies are technically feasible and applicable to all paediatric ages; they should be considered as an alternative approach for trained groups.

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El objetivo del presente estudio consistió en revisar nuestra experienciainicial con el uso de la toracoscopia para la realización de resecciones pulmonares y sus complicaciones. Para ello se llevó a cabo un estudio retrospectivo de las historias clínicas y videos de lobulectomías pulmonares toracoscópicas de pacientes intervenidosquirúrgicamente en la Fundación Hospitalaria-Hospital Privado de Niños y en el Hospital Universitario CEMIC durante el período 04/2005 - 10/2008. Se incluyeron 11 pacientes delsexo femenino y 9 del sexo masculino. Las medianas del tiempo quirúrgico, del tiempo de permanencia del tubo de drenaje y de la estadía hospitalaria fueron de 150 minutos (intervalo:60-270 minutos), 3 días (intervalo: 2-10 días) y 15 días (intervalo: 3-29 días), respectivamente. Se concluyó finalmente que la lobulectomía pulmonar toracoscópica es una técnica factible yaplicable a todas las edades pediátricas, que debiera considerarse como alternativa de abordaje para grupos entrenados.

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